def get_alternate_languages(self):
"""Cache relative urls only. If we have multilingual sites
and multi domain site caching absolute urls will result in
very inefficient caching. Build absolute url in template.
"""
tm = ITranslationManager(self.context)
catalog = getToolByName(self.context, 'portal_catalog')
results = catalog(TranslationGroup=tm.query_canonical(),
Language='all')
portal_path_len = len(
'/'.join(self.portal_state.portal().getPhysicalPath()))
alternates = []
for item in results:
url = item.getURL(relative=1)[portal_path_len:]
alternates.append({
'lang': item.Language,
'url': url.strip('/'),
})
return alternates
